package com.atguigu.myjuc.interactive;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;


    //资源类
class ShareData{
    //标志位 A:1 B：2 C：3
    private int flag = 1;
    private Lock lock = new ReentrantLock();
    private Condition condition1 = lock.newCondition();//可以理解为一把锁三把钥匙
    private Condition condition2 = lock.newCondition();
    private Condition condition3 = lock.newCondition();
    void print5() throws InterruptedException {
        lock.lock();
        try {
            //判断
            while (flag != 1){
                condition1.await();
            }
            //干活
            for (int i = 1; i <= 5 ; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //通知(这里要通知第二个)
            flag = 2;
            condition2.signal();
        }finally {
            lock.unlock();
        }
    }

    void print10() throws InterruptedException {
        lock.lock();
        try {
            //判断
            while (flag != 2){
                condition2.await();
            }
            //干活
            for (int i = 1; i <= 10 ; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //通知（通知第三次）
            flag = 3;
            condition3.signal();
        }finally {
            lock.unlock();
        }
    }

    void print15() throws InterruptedException {
        lock.lock();
        try {
            //判断
            while (flag != 3){
                condition3.await();
            }
            //干活
            for (int i = 1; i <= 15 ; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //通知
            flag = 1;
            condition1.signal();
        }finally {
            lock.unlock();
        }
    }
    }
//-----------------------笔记--------------------

/**
 笔记
 *   多线程之间按顺序调用，实现A->B->C
 *   三个线程启动，要求如下：
 *    *  *
 *   AA打印5次，BB打印10次，CC打印15次
 *   接着
 *   AA打印5次，BB打印10次，CC打印15次
 *   ......来10轮
 *    *
 *
 *   笔记：Java里面如何进行工程级别的多线程编写
 *    1 多线程变成模板（套路）
 *     高内聚低耦合前提下，线程    操作    资源类
 *
 *    2 多线程交互问题时， 判断    干活    通知
 *
 *    3 需要注意防止虚假唤醒，wait方法需要用到while
 *
 *    笔记：Java里面如何进行工程级别的多线程编写
 *    * 1 多线程变成模板（套路）
 *    *  高内聚低耦合前提下，线程    操作    资源类
 *    *  *
 *      2 判断   干活   通知
 *
 *      3 多线程通信中，如果存在wait方法的调用要避免，------虚假唤醒
 *  */


public class ThreadOrderAccess {
    public static void main(String[] args) {
        ShareData shareData = new ShareData();
        new Thread(()->{
            for (int i = 0; i < 10; i++) {
                try {
                    shareData.print5();//线程 操作 资源类
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        },"AA").start();
        new Thread(()->{
            for (int i = 0; i < 10; i++) {
                try {
                    shareData.print10();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        },"BB").start();
        new Thread(()->{
            for (int i = 0; i < 10; i++) {
                try {
                    shareData.print15();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        },"CC").start();
    }
}
